iOS - how to create a navigation bar item in view controller?

Question

I have been trying to create a navigation bar back button.

Here is my code :-

UIBarButtonItem *barButton = [[[UIBarButtonItem alloc] initWithTitle:@"Done" style:UIBarButtonItemStyleBordered target:self action:nil]autorelease];
self.navigationItem.rightBarButtonItem = barButton;

But it isn't displaying anything on navigation bar.

I am using UIViewController, not an UINavigationController.

Is UINavigationController is the only way to achieve this?

Any help would be really appreciated.

Any link to a good tutorial will be great.

Thanks.

Answer 1

Without the viewcontroller having a navigation controller (i.e viewController.navigationController != nil) you cannot add it in this manner.

One thing you can do is if it is being created by the nib is to just drag a bar button item into a navigation bar and link it via IBAction.

Answer 2

I'd recommend pushing this view controller out of a nvigationcontroller - you will get all those things for free:

UIViewController *vc = [[UIViewController alloc] initWithNibName:nil bundle:nil];
UINavigationController *navCntrl1 = [[UINavigationController alloc] initWithRootViewController:vc];